From: Ben Gamari <ben@smart-cactus.org>
To: Allen_Hung@Dell.com, Mario_Limonciello@Dell.com
Cc: linux-input@vger.kernel.org
Subject: RE: Dell Latitude E7470 touchpad status
Date: Tue, 17 May 2016 08:03:45 +0200 [thread overview]
Message-ID: <87bn45gr0e.fsf@smart-cactus.org> (raw)
In-Reply-To: <23E0F704395E694FA4710C833FA087E50D40B8BF13@TPEX7ADC101.APAC.DELL.COM>
[-- Attachment #1: Type: text/plain, Size: 985 bytes --]
Allen_Hung@Dell.com writes:
> Dell - Internal Use - Confidential
> Hi Ben,
>
> We have just confirmed the touchpad on Latitude E7470 is a PS/2
> device, not an I2C-HID input device. The code you listed is common
> among many Dell products and the value of SDS0 should be provided
> somewhere (I can't find it out) to specify a PS/2 device.
>
Thanks Allen,
I rather suspected this; I suppose it's probably hard to find I2C-HID
hardware that integrates a touchstick. This explains why SDS0 is 0 on my
hardware.
In this case I suppose this is yet another Alps device? I've tried
bringing it up with all of the recent Alps protocols supported by the
alps.ko driver but sadly nothing seems to emit multitouch events, so
it seems likely that there is yet another protocol variant waiting to be
implemented. Is there any chance you could see whether Alps might now be
more willing to provide protocol documentation? If not, perhaps there's
a Linux binary driver available?
Cheers,
- Ben
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 472 bytes --]
next prev parent reply other threads:[~2016-05-17 6:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 13:31 Dell Latitude E7470 touchpad status Ben Gamari
[not found] ` <23E0F704395E694FA4710C833FA087E50D40B8BF13@TPEX7ADC101.APAC.DELL.COM>
2016-05-17 6:03 ` Ben Gamari [this message]
2016-05-17 8:23 ` Pali Rohár
2016-05-17 9:50 ` Ben Gamari
2016-05-17 13:16 ` Pali Rohár
2016-05-17 14:46 ` Allen_Hung
2016-05-17 15:22 ` Pali Rohár
2016-05-25 4:38 ` Allen_Hung
2016-05-25 7:39 ` Pali Rohár
2016-05-25 12:09 ` Ben Gamari
2016-05-25 14:45 ` Pali Rohár
2016-05-25 15:19 ` Hans de Goede
2016-05-25 15:32 ` Pali Rohár
2016-05-25 12:32 ` Ben Gamari
2016-05-25 15:43 ` Pali Rohár
2016-05-25 15:47 ` Hans de Goede
2016-05-25 15:53 ` Ben Gamari
2016-05-25 16:01 ` Packet format for ALPS V8 trackstick (Was: Re: Dell Latitude E7470 touchpad status) Pali Rohár
2016-05-26 8:55 ` [PATCH] Alps SS4 V2 support for Dell Latitude 7470 Ben Gamari
2016-05-26 8:55 ` [PATCH 1/3] input/alps: Split up ALPS_BUTTONPAD behavior change Ben Gamari
2016-05-26 8:55 ` [PATCH 2/3] input/alps: Add touchstick support for V8 protocol devices Ben Gamari
2016-05-26 8:55 ` [PATCH 3/3] input/alps: Add device description for Dell Latitude E7470 Ben Gamari
2016-05-26 9:05 ` Pali Rohár
2016-05-26 12:19 ` Hans de Goede
2016-05-26 12:35 ` Pali Rohár
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87bn45gr0e.fsf@smart-cactus.org \
--to=ben@smart-cactus.org \
--cc=Allen_Hung@Dell.com \
--cc=Mario_Limonciello@Dell.com \
--cc=linux-input@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.